EP4282808A1 - Counterweight displacement mechanism and operating machine - Google Patents

Counterweight displacement mechanism and operating machine Download PDF

Info

Publication number
EP4282808A1
EP4282808A1 EP21920629.9A EP21920629A EP4282808A1 EP 4282808 A1 EP4282808 A1 EP 4282808A1 EP 21920629 A EP21920629 A EP 21920629A EP 4282808 A1 EP4282808 A1 EP 4282808A1
Authority
EP
European Patent Office
Prior art keywords
counterweight
mounting rack
matching
pin shaft
counterweight mounting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21920629.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP4282808A4 (en
Inventor
Bo Li
Zhongxiang HOU
Huimin Liu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sany Automobile Hoisting Machinery Co Ltd
Original Assignee
Sany Automobile Hoisting Machinery Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sany Automobile Hoisting Machinery Co Ltd filed Critical Sany Automobile Hoisting Machinery Co Ltd
Publication of EP4282808A1 publication Critical patent/EP4282808A1/en
Publication of EP4282808A4 publication Critical patent/EP4282808A4/en
Pending legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • B66C23/74—Counterweights or supports for balancing lifting couples separate from jib
    • B66C23/76—Counterweights or supports for balancing lifting couples separate from jib and movable to take account of variations of load or of variations of length of jib
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/72—Counterweights or supports for balancing lifting couples
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/18—Counterweights

Definitions

  • the present application relates to the technical field of work machine, in particular, to a counterweight displacement mechanism and a work machine.
  • work machines such as cranes
  • small and medium tonnage work machines mostly use fixed counterweight
  • some work machines use movable counterweight structures.
  • the movable counterweight structures are mostly provided with a telescopic counterweight mounting rack having a drive device.
  • a counterweight is mounted on the telescopic counterweight mounting rack.
  • the gravity center of the vehicle can be moved backward through the extension or retraction of the telescopic counterweight mounting rack to increase the stability of the vehicle.
  • the traditional movable counterweight structure has the problems of complex structure and large longitudinal space occupation. For large tonnage work machine, especially super-large tonnage work machine, it may not be able to meet the longitudinal space requirements during telescopic movement and translation movement.
  • the present application provides a counterweight displacement mechanism and a work machine to solve the problems in the related art that a movable counterweight structure has the problems of complex structure and large longitudinal space occupation.
  • the present application provides a counterweight displacement mechanism, including:
  • the counterweight mounting rack is two counterweight mounting racks, and the two counterweight mounting racks are provided on two sides of the tail portion in a width direction of the swivel table, respectively; and the matching portion is two matching portions respectively corresponding to the two counterweight mounting racks, and the two matching portions are detachably connected to two connecting portions respectively.
  • the connecting portion and the matching portion are detachably connected to each other through a connecting pin shaft; and the connecting portion is provided with a first pin hole for the connection pin shaft to pass through, and the matching portion is provided with a second pin hole for the connection pin shaft to pass through.
  • the counterweight mounting rack or the matching portion is provided with a pin shaft bracket
  • the connection pin shaft has a first end and a second end which are opposite to each other, and the first end of the connection pin shaft is movably connected to the pin shaft bracket in an extending direction of the first pin hole;
  • the counterweight mounting rack is provided with an abutting portion, and the abutting portion is located above the first pin hole;
  • the abutting portion is a positioning pin provided along the extending direction of the first pin hole
  • the jacking device is provided on the frame and is located below the counterweight mounting rack; or the jacking device is provided on the counterweight and is dynamically coupled to the matching portion.
  • a locking structure is provided between the counterweight mounting rack and the tail portion, and the locking structure is configured to limit the rotation of the counterweight mounting rack when the counterweight mounting rack is adjusted to rotate to a preset mounting position.
  • the locking structure includes:
  • the present application further provides a work machine including the above-mentioned counterweight displacement mechanism.
  • the counterweight displacement mechanism and the work machine provided by the present application, by disassembling the counterweight and the counterweight mounting rack, lifting the counterweight to the counterweight mounting rack through the jacking device for mounting the counterweight on the counterweight mounting rack after rotating and adjusting the counterweight mounting rack, the movement and adjustment of the counterweight can be realized. In this way, it will occupy less longitudinal space when moving and adjusting the counterweight, and the counterweight mounting rack has a simple structure and light weight and is easier to be rotated because the counterweight mounting rack does not need to be provided with a driving device.
  • Reference numerals 1-frame; 2-swivel table; 21-head portion; 22-tail portion; 3-counterweight mounting rack; 31-connecting portion; 32-first pin hole; 33-abutting portion; 4-counterweight; 41-matching portion; 42-second pin hole; 43-V-shaped groove; 5-jacking device; 6-connecting pin shaft; 7-pin shaft bracket; 8-locking structure; 81-connecting plate; 82-first limiting hole; 83-second limiting hole; 84-locking bolt; 100-work machine.
  • a counterweight displacement mechanism provided by the present application will be described in the following with reference to FIG. 1 to FIG. 7 .
  • the counterweight displacement mechanism can be used in a crane, a concrete pump truck, a fire truck and other work machines. Description will be given using a crane as an example.
  • the counterweight displacement mechanism includes a frame 1, a swivel table 2, a counterweight mounting rack 3, a counterweight 4 and a jacking device 5.
  • the swivel table 2 has a head portion 21 and a tail portion 22.
  • the head portion 21 is connected to the frame 1, and the head portion 21 and the tail portion 22 are oppositely provided in the length direction of the swivel table 2.
  • the counterweight mounting rack 3 is rotatably connected to the tail portion 22 along an axis of a vertical direction.
  • the counterweight mounting rack 3 is provided with a connecting portion 31 which is located on one side of a rotation axis of the counterweight mounting rack 3.
  • the counterweight 4 is provided with a matching portion 41 detachably connected to the connecting portion 31.
  • the jacking device 5 is configured for driving the matching portion 41 to move up or down relative to the connecting portion 31.
  • the connecting portion 31 and the matching portion 41 are firstly disassembled, and the counterweight 4 is lowered through the jacking device 5. And then the counterweight mounting rack 3 is rotated to adjust it, and the counterweight 4 is translated by the lifting device of the work machine 100, to make the matching portion 41 and the connecting portion 31 vertically opposite to each other.
  • the movement and adjustment of the counterweight 4 can be realized by disassembling the counterweight 4 and the counterweight mounting rack 3, rotating and adjusting the counterweight mounting rack 3, and lifting the counterweight 4 to the counterweight mounting rack 3 by the jacking device 5 for mounting the counterweight 4 on the counterweight mounting rack 3.
  • the counterweight mounting rack 3 has a simple structure and light weight and is easier to be rotated because the counterweight mounting rack 3 does not need to be provided with a driving device.
  • the jacking device 5 can drive the matching portion 41 to move up or down relative to the connecting portion 31 in various ways.
  • the jacking device 5 can be provided on the counterweight 4 and be dynamically coupled to the matching portion 41.
  • the jacking device 5 can be a telescopic cylinder whose cylinder rod can be connected to the matching portion 41 and whose cylinder body can be fixedly connected to the main body of the counterweight 4.
  • the cylinder rod of the telescopic cylinder is firstly driven to be extended, to make the matching portion 41 move to the connecting portion 31 of the counterweight mounting rack 3.
  • the jacking device 5 can be provided on the frame 1 and can be located below the counterweight mounting rack 3. The jacking device 5 lifts and lowers the counterweight 4 as a whole to drive the matching portion 41 to move up or down relative to the connecting portion 31.
  • the jacking device 5 can be an oil cylinder which is oiled through a rodless cavity, which is conducive to realizing lightweight design and low cost.
  • the number of counterweight mounting racks 3 is two, and the two counterweight mounting racks 3 are provided on two sides of the tail portion 22 in a width direction of the swivel table 2 respectively; and two matching portions 41 corresponding to the two counterweight mounting racks 3 are provided, and the two matching portions 41 are detachably connected to the two connecting portions 31 respectively. In this way, the force on the counterweight 4 will be more balanced.
  • the connecting portion 31 and the matching portion 41 can be fixedly connected through a screw joint component.
  • the connecting portion 31 and the matching portion 41 can be detachably connected through a connecting pin shaft 6.
  • the connecting portion 31 is provided with a first pin hole 32 for the connection pin shaft 6 to pass through
  • the matching portion 41 is provided with a second pin hole 42 for the connection pin shaft 6 to pass through.
  • the detachable connection between the connecting portion 31 and the matching portion 41 is realized by the connecting pin shaft 6, which makes the disassembly and assembly of the counterweight 4 are more convenient.
  • the counterweight mounting rack 3 or the matching portion 41 is provided with a pin shaft bracket 7, the connection pin shaft 6 has a first end and a second end which are opposite to each other, and the first end of the connection pin shaft 6 is movably connected to the pin shaft bracket 7 along an extending direction of the first pin hole 32.
  • the matching portion 41 is located at a first position and the connecting pin shaft 6 is located at a first pin shaft position, the second end of the connecting pin shaft 6 passes through the first pin hole 32 and the second pin hole 42, and the connecting portion 31 is connected to the matching portion 41.
  • the connecting portion 31 and the matching portion 41 are separated from the connecting pin shaft 6, and the connecting portion 31 and the matching portion 41 are separable.
  • the pin shaft bracket 7 is fixedly mounted on the counterweight mounting rack 3, and the connection pin shaft 6 is connected to the pin shaft bracket 7, which can avoid lost of the connection pin shaft 6.
  • the counterweight mounting rack 3 is provided with an abutting portion 33 which is located above the first pin hole 32.
  • a top end of the matching portion 41 abuts the abutting portion 33, and the first pin hole 32 and the second pin hole 42 are opposite to each other in the extending direction of the first pin hole 32.
  • the matching portion 41 is located at the second position, the matching portion 41 is located below the abutting portion 33.
  • the abutting portion 33 can position the counterweight 4, thereby facilitating the smooth insertion of the connecting pin shaft 6 to fix the counterweight 4.
  • the abutting portion 33 is a positioning pin provided along the extending direction of the first pin hole 32.
  • the top end of the matching portion 41 is provided with a V-shaped groove 43 having an opening facing upward, and the V-shaped groove 43 penetrates the matching portion 41 in an extending direction of the second pin hole 42.
  • the positioning pin When the matching portion 41 is located at the first position, the positioning pin at least partially protrudes into the V-shaped groove 43, and the positioning pin abuts against two side walls of the V-shaped groove 43 which are opposite to each other.
  • the counterweight 4 can be prevented from shaking during working.
  • a locking structure 8 is provided between the counterweight mounting rack 3 and the tail portion 22, which is configured to limit the rotation of the counterweight mounting rack 3 when the counterweight mounting rack 3 is adjusted to rotate to a preset mounting position. After the counterweight mounting rack 3 is adjusted, the locking structure 8 can prevent the counterweight mounting rack 3 from shaking.
  • the locking structure 8 includes a connecting plate 81 and a locking bolt 84.
  • the connecting plate 81 is connected to the tail portion 22 and is provided downward, and the connecting plate 81 is provided with a first limiting hole 82 and a second limiting hole 83 which pass through the connecting plate 81.
  • the locking bolt 84 is provided along the rotation axis of the counterweight mounting rack 3, and the locking bolt 84 has a locking end facing toward the connecting plate 81 and a connecting end facing away from the connecting plate 81.
  • the connecting end of the locking bolt 84 is connected to the counterweight mounting rack 3 through an elastic component.
  • the connecting portion 31 When the counterweight mounting rack 3 is located at a first mounting position, the connecting portion 31 is closer to the head portion 21 than the rotation axis of the counterweight mounting rack 3, and the locking end of the locking bolt 84 is clamped with the first limiting hole 82. When the counterweight mounting rack 3 is located at a second mounting position, the connecting portion 31 is farther away from the head portion 21 than the rotation axis of the counterweight mounting rack 3, and the locking end of the locking bolt 84 is clamped with the second limiting hole 83. As shown in FIG. 1 and FIG.
  • the length direction of the frame 1 is a front-rear direction, and then two mounting positions of the counterweight are formed on the frame 1, and one of them is on the front of the frame 1 and the other is on the rear of the frame 1.
  • the jacking devices 5 are provided on the frame 1 and correspond to the two mounting positions of the counterweight.
  • a plurality of jacking devices 5 are mounted on the frame 1 at intervals along the width direction of the frame 1 and correspond to each mounting position of the counterweight.
  • two jacking devices 5 are mounted on the frame 1 at intervals along the width direction of the frame 1 and correspond to each counterweight mounting position.
  • the present application further provides a work machine 100.
  • the work machine 100 can be a crane, a concrete pump truck, or a fire truck, etc. As shown in FIG.1 to FIG. 7 , the work machine 100 includes the above-mentioned counterweight displacement mechanism.
  • the movement and adjustment of the counterweight 4 can be realized. In this way, it will occupy less longitudinal space when moving and adjusting the counterweight 4, and the counterweight mounting rack 3 has a simple structure and light weight and is easier to be rotated because the counterweight mounting rack 3 does not need to be provided with a driving device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)
  • Component Parts Of Construction Machinery (AREA)
EP21920629.9A 2021-01-25 2021-09-18 COUNTERWEIGHT MOVEMENT MECHANISM AND OPERATING MACHINE Pending EP4282808A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110097818.XA CN112758845B (zh) 2021-01-25 2021-01-25 配重变位机构及作业机械
PCT/CN2021/119334 WO2022156251A1 (zh) 2021-01-25 2021-09-18 配重变位机构及作业机械

Publications (2)

Publication Number Publication Date
EP4282808A1 true EP4282808A1 (en) 2023-11-29
EP4282808A4 EP4282808A4 (en) 2024-07-10

Family

ID=75707139

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21920629.9A Pending EP4282808A4 (en) 2021-01-25 2021-09-18 COUNTERWEIGHT MOVEMENT MECHANISM AND OPERATING MACHINE

Country Status (3)

Country Link
EP (1) EP4282808A4 (zh)
CN (1) CN112758845B (zh)
WO (1) WO2022156251A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112758845B (zh) * 2021-01-25 2023-07-28 三一汽车起重机械有限公司 配重变位机构及作业机械
CN114735604B (zh) * 2022-04-20 2024-10-08 长沙佳顺玛钢件有限公司 一种能自拆装变位的起重机配重装置
CN115818471B (zh) * 2022-11-23 2024-09-27 湖南三一中型起重机械有限公司 配重安装结构及工程机械

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120060008A (ko) * 2010-12-01 2012-06-11 두산인프라코어 주식회사 건설기계용 카운터웨이트 탈장착 장치
CN102275836A (zh) * 2011-06-07 2011-12-14 湖南中联重科专用车有限责任公司 起重机和起重机的配重装卸机构、配重块
CN203439964U (zh) * 2013-08-19 2014-02-19 四川长江工程起重机有限责任公司 汽车起重机平衡重安装机构
CN204096961U (zh) * 2014-08-28 2015-01-14 三一汽车起重机械有限公司 起重机
CN105776020B (zh) * 2016-05-05 2017-07-28 三一汽车起重机械有限公司 起重机及其配重挂接系统、配重挂接方法
DE202016005419U1 (de) * 2016-09-05 2016-10-04 Liebherr-Werk Ehingen Gmbh Kran und Gegengewicht für einen Kran
US11440778B2 (en) * 2018-08-06 2022-09-13 Tadano Ltd. Crane
CN110775840B (zh) * 2019-10-31 2021-05-07 三一汽车起重机械有限公司 一种配重平移组件及起重机
CN111302243A (zh) * 2020-05-13 2020-06-19 三一汽车起重机械有限公司 一种起重机
CN111591912B (zh) * 2020-06-23 2024-09-03 三一汽车起重机械有限公司 自拆装变位配重装置及起重机
CN112758845B (zh) * 2021-01-25 2023-07-28 三一汽车起重机械有限公司 配重变位机构及作业机械

Also Published As

Publication number Publication date
EP4282808A4 (en) 2024-07-10
CN112758845A (zh) 2021-05-07
WO2022156251A1 (zh) 2022-07-28
CN112758845B (zh) 2023-07-28

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